Autograph manuscript of John O'Donovan's edition of the poem Brónach ollamh déis a rígh (ascr. to Urard mac Coise) from TCD 1419 (H 6. 15). In the general catalogue of Trinity College, Dublin (1900), the manuscript is indexed twice, as nos. 1175 and 1420.

A collection of 19th-century transcripts from early Irish law tracts in manuscripts from Trinity College, Royal Irish Academy, the Bodleian and the British Museum. It consists of 17 volumes that were written by John O'Donovan and Eugene O'Curry for the Brehon Law Commission.